age = 20
name = 'Swaroop'
print('{0} was {1} years old when he wrote this book'.format(name, age))
print('Why is {0} playing with that python?'.format(name))

print('%s was %d years old when he wrote this book'%(name, age))
print('a', end=' ')
print('b', end=' ')
print('c')

import sys
i=0
while(i<len(sys.argv)):
    print(sys.argv[i])
    i=i+1
